QoS support for PTs inside PTG, as 2 new NSP param types.
The new NSP param types, qos_maxrate and qos_burstrate, map to the
Neutron QoS Policy resource, which then gets associated to a QoS
bandwith limit rule with a certain maximum rate and/or burst rate (in
Kbps) set.
Change-Id: I4a15daf5e0edd76d2d436eac6fdfb6b9f64992b2
6b2c15c3b8